55664550465 has 16 divisors (see below), whose sum is σ = 89981461248. Its totient is φ = 29381700096.

The previous prime is 55664550449. The next prime is 55664550499. The reversal of 55664550465 is 56405546655.

It is not a de Polignac number, because 55664550465 - 2⁴ = 55664550449 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19127257 + ... + 19130166.

It is an arithmetic number, because the mean of its divisors is an integer number (5623841328).

Almost surely, 2^55664550465 is an apocalyptic number.

It is an amenable number.

55664550465 is a deficient number, since it is larger than the sum of its proper divisors (34316910783).

55664550465 is a wasteful number, since it uses less digits than its factorization.

55664550465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38257528.

The product of its (nonzero) digits is 10800000, while the sum is 51.

The spelling of 55664550465 in words is "fifty-five billion, six hundred sixty-four million, five hundred fifty thousand, four hundred sixty-five".